| Id | Element | Ion | Binding family | Amino acids or nucleotide residues names | All bound residues | Is homomer | Number of bound amino acids or nucleotide residues | Number of all bound residues | Number of coordinating chains | Representative |
|---|---|---|---|---|---|---|---|---|---|---|
| 3QW5-ZN-1 | ZN | Zn²⁺ | H2R1 | ARG.HIS. | ARG.HIS. | ✘ | 3 | 3 | 2 | ✔ |
| 4ASR-ZN-1 | ZN | Zn²⁺ | H2R1 | ARG.HIS. | ARG.HIS. | ✘ | 3 | 3 | 2 | ✔ |